Elevator system



1,632,376 J. R. JACKSQN, JR

Ewa/won SYSTEM Filed Feb. 27. 1924 ,2 Sheets-Sheet l I enoif': Jsepli.Jaceson 15: by LA7 wim,

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June 14 1927.

is provide Patented June 14, 1927.

UNITED STATES PATENT OFFICE.

JOSEPH B. JACKSON, JR., 0F BOSTOI, IASBAGHUSETTB, ABBIGNOR TO A. B. LEEELE- VATOB COMPANY, INU., OI NEW YORK, N. Y., A. CORPORATION OFDELAWARE.

. ELEVATOIB SYBTEI.

Application lied le'hrnary $7, 1M Serial No. 695,491..

This invention aims to improve elevator systems and more particularly,though not exclusively, the door or closure operating instrumentalitiestherefor.

In the accompanying drawings showing one embodiment of my invention:

Fig. 1 is a front elevation of an elevator car showing a portion of theelevator shaft door in elevation with arts thereof broken away to moreclearly ilustrate the operating means therefor and the closure means forthe car;

Fig. 2 is a detail vertical section taken substantially-on the line 2 2of F ig. 1 illustratin an example of interlocking means where y movementof one closure 'is edeted from movement of the other;

Fig. 3 is a detail front view of the interlocking means of Fig. 2;

Fig. 4 is a detail vertical section taken on the line 4--4 of Fig. 1showing power actuated means operating the elevator closure means; and

Fig. 5 is a detailed side elevation of the power unit from which poweris received to operate the aforesaid means.

This invention is rimarly, though not exclusively, concernedpwith theprovi ing of power means to be o rated when the elevator car is in a preetermined relation to closure or barrier means for elevator shaftopenings to supplement or cooperate with manually opera J e doororclosure operating instrumentalties alread installed upon the doors forthe several oors served b the elevator car and also to operate the cusing means for the car itself.

In the drawings, an elevator car 1- is illustrated whichv may beprovided with any apropriate motive po'wer to move the same to oadingand unloading relation with the several floor openings served' by saidcar.

The opening of the elevator car through which the assengers enter orleave the car dp with closure means herein consisting of a folding gate2 supported by rollers 3 engaging n suitable track at the top of the car1.

The elevator car 1 is arranged to operate in the usual manner in a wellor shaft 5 having openings such as that shown at 6 at the various floorlevels served b v said cnr, said o nings being guarded by barriersprefera ly consisting of doors 7 formed in one or lmore relativelisliding sections according to the width oft e openlngs required buthere- 1n said door is composed of two sections 8 and 9, the section 8bein arranged to slide by the section 9 to rovi e an openingsubstantxally the size o the o ening of the elevator car protected bysai gate 2.

The doors 8 and 9 for the elevator shaft openings are preferablyarranged to be mannelly operate and herein by means consistmg of links11 and 12 pivotally connected together at 13. The link 11 is pivotallysecured .at its other end at 14 to a portionof the sliding section 8 ofsaid door and the farther end of tle link 12 is desirably pivotallysecured at 15 to a fixed bracket 16. An operating arm 17 is provided forone of said links, preferably the link 11 whereby said links 11 and 12which constitute a togglie, may be buckled or broken and, by so omg,more the section 8 of the door to its open position, ap ropriate stopsbeing provided to insure t e alignment of the links 11 and 12 in theirstraightened door closing relation shown in Fig. 1 to prevent o cning ofsaid doors without first tilting sui links.

For convenience self-closing means are provided herein consisting of acylinder 18 pivoted at 19 to a fixed part of thc elevator shaft. A iston20 is arranged in the cylinder 18 an is connected by a rod 2l with thelink 12 near its pivot 15. Also arranged within the cylinder 18 betweenthe piston and a cap 20'I secured to thc end of the cylinder from whichthe rod 20 protrudes is a spring 22 which normally acts to force thepiston 20 to the lower end of the cylinder 19, thereby causing thereturn of the links 11' and 12 to their straightened door lockingpositions. These links nrc mounted upon the inside of the doors 8 und 9and in convenient relation to the. opening r in the elevator cur whenthe latter is brought to a position in front of said doors.

It is desirable at times to o iernte thi` doors 8 and 9 by ower rather t:in by manual means: there ore I provide a power unit 23 herein forconvenience mounted upon the car 1 to more therewith :und 1:rvlcrnl1lvenibodying in its construction un electric motor 24 secured to the frame25 of the elevator and having n worm 26 secured to its :irhor to operatea worm oem 27. The worm gen1- 27 is secured to n sha ft 28 journnlled torotntr lll `to the dotted line in suitable bearings' provided in a 29enclosing said worin w and worm, an 'to the and of the shaft 1I issecured erank disk 30hs apinltowhichalinkmatf tachd. o link 82 isconnected witliaud adapted to impart desii'ed recprocatory movements toa. slide 33 arranged to slide in appropriate 'des 84 herein secured tothe gutergside o the elevator 1 adjacent to the oor Any a 'ate means maybe provided for oomliiipurigicrting the movement of the slide 83 to themovable door section 8 b ut preferably for this purpose' there ispivotall secured at #i6-to the slide 38 a contact memher 85 carryi atits free and a friction roll B7 adap at the proper tune, to be swunginto gperative engagement with the link 12 (see g. 4) and to tilt saidlink, buckling the toggle formed by it and thelcver 11 and thus causingthe door. to which the en'd 14 of said link 1l is attached to slide toits open `tn.

During e normal o ration of the elevator car up or down in e shaft orwell it is desirable that the contact arni 35 be in its out-of-oontactposition so ns not to interfere with the movements of the elevator untilthe oor of the car has been brought substantiall in register with one ofthe .floors of the aft and it is desired to open the door for passen creto enter or leave the car.

To accomplis the roper positioning of the arm 85 and its friction roller37 in operetve relatitn to a'tllile z)lisait 12, sail arm 3311s 'wi atarrange norm gcnm extend be nd the rear face of theslid andsda,wheninacertain oeiiioxli to en e end 39 of a relativ cam te 4l).

The front face 41 of this plate is arranged to be ged by a ila-t surface42 formed upon m1 tail piece substantially at right angles to the lo onof the contact arm 85 after sai i 35 has been swung outwardly to itslink-engaging position from the full line position shown in Fig. 4

ition therein. The ent of the 38 witltitlie end 3?' mit sai durin e uwar nieveinen o the slill-ets, togegther with said arm, causas said armto be moved so that its flat surface 42 is in contacting and slidingrelation with the face 11 of said cam plate, the initial movement ofsaid slide being utilized for this To so the impact of the friction nieniber 3'! upon the link 12 said member 37 is resiliently mounted in theend of the arm B5 and yields slightly when the impact occnrs. The throwof the crank 31is'preferab] such that in addition to swingi the ling 12upwardly to its full collapse position when the arm 85 and riction rolls37 are ln operative relation thereto, the slide 33 will be moved a atei'amount than is neces sary to bring e tail 38 into en ement with the end39 of the fixed cani plate 40 and to row the arm 35 to its operativeposition against the link 12. This movement is effected in substantiallyone half a rotation of the disk 3G, said disk however being permitted torotate until the slide 33 is returned to its normal ste position whereinthe eontactin member 5 is out of en' ga ement with elink 12.

e arrangement of the power driven or power operating instrumentalitiesis preferably such that even though the crank disk 30 makes a completeturn or moves the link 12 to its highest position and is then retractedto its normal starting position, the link 12 need not follow to itsstarting or door closing ition until later.

In ot ier words the :resent construction is arranged to move the ink 12npwardl but not to move it downwardly and the c luder 18, istoii andsp1-in 22 ellect t e self closing of the door in ependently of saidpower means.

The operator may, by maintaining pres sure upon the operating lever,retain the door iii its upon position :is lon as hc Secs lit owing tothe manner in which the link 12 is engnwerl by tlin actuating member 35,the lutter half of the rotation of the crank disk causing said actuatingmember merely to dwp away from said link and after reaching the end ofthe plate 40 to retract to its inactive full line position of Fig. 4allowing the elevator cnr to ascend :ind descend without interferencetherewith.

'Ihe member 35 is preferably, though not essentially carried hy theelevator car tngethcr with the power actuating instrumentalitee 23.Therefore the car must be brought within n certain predetermined rangeof the elevator shaft opening 6, the door whereof is controlled by themanually o eriihle lever mechanism including the links Il and 12 wherebysaid actuated arm will strike said link 12 u n its bein thrown upwardlyas hereinbe ore describ but in order to allow for the carelesspositinning o'f the cai' with relation to'sadopening by the operator, aslightly greater throw of the crank pin 3l than is normally reguired muybe and preferably is provided.

or example the tall 3S, in its lowermost position, is spaced from theend 39 of the plete 40 against which it contacts and this gap togetherwith the movement required to swing the friction member 37 from itslower position shown in full lines in Fig. 4 to its slotted position ofsaid ligure provides for any reasonable variation between the floorlevel ot' thc car and that of the door at which n binding is to he madewhereupon the full opening of the door will be assured even though itsinitial opening lll) l tions due to the delayed or advance 'is advancedor retarded due to the variable sto'ping position of the car.

y e variations which would apparently occur at the end of the dooropeniii operaf contact with the link 12 by the arm 35 may be providedfor by allowing ment of the arm 35 than is normally re nii-ed to movethe door to' its substan. ially ll open position` which position wi llbe determined b i appro riate stops or resilient bum of t e uson typeemployed in a elevator doors but not shown herein. Should the elevatorcar be bron ht to a stop at a int iibove the threshol of the shaftopenin and the upward movement of the carrier 83 continued beyond thepoint where the door would normally strike the full open sto s, thefriction member 3'? being resilient y mounted. as hereinbeforementioned, will yield s cientl by compressing the sprn 43 interposedtween the carrier for said riction member 37 and the arm 35 to absorbany reasonable excess movement ofl the openn I Within e scope andpurpose of the invention the closure means2 herein the gate 2, for theentrance and exit opening of the elevator car may be manually operatedbythe elevator o erator but referably means are provided or elfecting t econjoint movement of said closure means and said door.

To this end means are refersbly mounted upon a movable parto theelevator shaft door, herein the section 8, said means being noi-mallretracted to o -tion wherein they wil not interfere with the ascent ordescent of the elevator car but when it is desired to open the closuremeans for the elevator car and said car is iniroper alignment with ashaft opening, sai( means may be moved to a osition such as to effectthe interloclri o the movable door section 8 with the c osure means 2and thereb cause both of these parts to move together their openpositions.

Anly appropriate device may be utilised for t e purpose just describedbut herein I have shown mounted upon the door B, a rocker iii-m 44pivoted at 4 5 in a bracket 46 attached to said door and having, at itsfree end, a cross arm 47 carrying friction members 48. The arm 47 ispvotalll mounted upon the end of said ariii 4.8 a is adapted to beyieldingl held in operative position b a spring 4 Movable wit the arm 44is a crank arm 50 connected by a link lwith one arm of a bell cranklever 53 pivoted at 54 to the door section 8. ne arm 55 of said bellcrank 58 is slotted at 56 and receives a pm 57 projecting laterally froma sliding r 58, the latter arranged to slide in ap ropr'iate brackets 59also carried by said oor. A spring 60 encircling said rod andrespecmeinst for a greater movel] the Aties whereof are curve tivelybearing against a collar 6l and one of said bearings 59, normally urgesthe rod 58 toward the right of Fig. 8 and into yielding contact with theiamb 62 ofthe elevator shaft opening when the door section 8 is closed.

The normal position of the member 44 and Vits cross arm 47, when thedoor B is closed, is that shown in dotted lines, Figs. 2 and 3, whereinthe cross arm L7 rests in enga nient with a contact plate 63 'upon oor8. 'lhe plate 63 causes the cross arm 4T to he rocked upon the arm 44 toa position which vlaces the spring 49 under tension and hol s said crossarm substantially parallel'with and dat against said Elate. In thislosition the arm 47 is held the rod 58 an connecting instrumentalitiesas long as the door section 8 remains closed and the said rod 58 remainswith its end substantially flush with the forwaid edge of the door 8 andin contact with the ed 62 of the door jamb.

ounted u n the closure means 2 is a channeled plate 6l having 6iiioedand substantially parallel lian es the extremioutwardly to form Haringmouths 65. The channeled member 64 is positioned upon the gate 2 at apoint to receive between its Ranges the cross ami 47 and its frictionmembers 48 wlienthe latter are swung to lateral position by the initialopening of the door section 8.

The flan s 64 are desirably long enough to receive t e friction members48 and their carrying arm even though the elevator car licor be stop edslightly above or below the level of the oor at a selected opening 6 ofthe elevator shaft.

The transverse position of the channel member 64 is preferably such thatwhen the door 8 is opened just far enough to clear the end of the rod58z as indicated at Fig. 3, said dan will receive between them the twofriction members 48 carried by the cross arm 47 as the latter are swungfrom their upper collapsed .positions to the interlocking positionthereof and following which continued movement of the door 8 will reducea like movement of said gate 2. In o her words the door 8 and the te orclosure means 2 will be moved conjointly from the point where theinterlocking action takes place to the fully opened positions thereof.

A brief description of the general operation of the invention is asfollows:

The elevator car is moved to the desired Boor level and brought to astop with the door of said car either in perfect alignment' with thelicor of the opening 6-or within a predetermined ran e o said door. Theoperator of the car t n operates appropriate circuit controlling devicesnot shown enerizin the electric circuit containing the motor whichcauses said motor to, revolve lll! lll

the crank disk 30 and its crank pin 31 and thereby raise the slide 33,bringn the tail piece 38 of the contact member 3 into en gageinent withthe end39 of the cam late 40. .Continued upward movement o the slide -33causes the arm 3 5 to swin 1 from its full lino position of Fig. 4 tothe otted line ition therein bringing the friction ineini: 3'? into ennient with the under side of the link i2. e slide 88 and arm 36 thencontinues upwiirdlg,v carrying said link 12 to its uppermost positionwhen further opening movement of the doors other than that produced bythe momentum of the moving parte toward their stggs, ceases butcontinucd rotation of the di 30 carries the crank pin back to itsstarting point 'where it preferably comes to rcs-t and the contactmember 35 returns tn its collapsed position shown in fulllnes in Fig. 4.

The initial opening movement if tlic gate or doors S which stiirts ther-iilliipsin y of tlic toggle links' 11 und 12 thereby unloc ing thedoor. permits the spring shown moet clearly in Fig. 3 to ur the collar61 toward the sto 59 an ,during this initial movement.` t ie sliding rod5B will be held b its spring in contact with the jnmb of the e erutoi'shaft opening 6.

'llic lever 53 moves bodily with the door hut is rocked upon its pivotwhen thc rod 58 is .permitted to move in its guide or the door o ns andthis relativo movement causes tie arm 44 to be swung downwardly from thou per folded position to its channel interior: ing ositinn wliereu oncontinued movement oi) the door 8 wi l causo the lf ,rate to he fullycollapsed moving conjoiiitly with said door 8. Tf it is desired toretain the door in its open position, the oporiitoi' muy, by pressureupon the handle 17, retain the same in such position and when furtherneed of this is roiimved, a release of said arm will. in the presentexample, cause the toggle composed of the linl l1 and 12, to bestraightened by pressure exerted thereon by the s' ring contained in thecylinder 18, thereby providing ii self closing .nouns for the elevatorshaft door as well as for the car closure menus. As the door 8uppi'oiiches the end of ils closing increment the forward end of liiesliding; member 58 will contact with the edge G2 of the door jiimli andhe dcpiessed, thereby swinging; the lever 53 upon its pivot downwardlyund drawing with it tiierod 51 which is attached by the rruiilc arm '50to the arm 44. By this nun-'ement the arm 44- ivili swing upwardlybringiiil the 'u pcrmost roll i8 into engagement wit. the ,p ate 63 undcause the cross ui'in 47 to swing about its exis against the action ofthe saving 49 to its {oldi-d inoperative position shown in dotted linesin Figsl 2 and 3 where it will remain su long as the toggle composed oflinks 1i and l2 is in its straightened position wherein it serves as alock to prevent operation of the elevator shaft door from the outside.

While I have herein shown and described merel for illustrative purposesone specific vmbo ment of my invention and have die closed and discussedin detail the construction andarrunguent incidental to suoli dis.closure, it is to distinctly understood that the invention is limitedneither to the more details or relative arrangement of the parte nor tothe specific application herein shown, but 'that extensive variationsfrom the illustrations may bc made without departing from the principlesthereof.

Claims:

1. in elevator system comprising in oomliiiiations an elevator car, aplurality of floor o emngs, barriers for said openings, minimi 3 1 o`riilile toggle means for operating said arriere, power means o arablewhen sind car is opposite a door opening direutiy to o crate upon saidtoggle menus to nieve sind rrier and spring means for cloaing saidbnrrier,

2. An elevator system comprisi liiuation an elevator car arranged iiplurality of iloor openings, closure means for Suid floor openinmanually operable loggie menus for sui closure means and poum' ineensvarried by said oar and. noriimlly out otengageiiient, with said manualmenus uiliiptcd to be moved into operative engageiiu-.nt with saidtoggle when the oar within rouge of one of said floor -openings tuoperate said closure means.

n. In :1u elevator system, in combination, an eleva-tor coi', closuremeans for said car, an elevator shaft door, manual operating menne forsaid door and power means carried by said our adapted to be moved from anormally withdrawn position to en suivi iiianiial operating means toeil'ect e simultaneous operation of said door and closure mciiiis.

4. In 1n elevator system, the combination with iiuinuully operableself-closing elevator shaft door operating means, of an elevator car anda motor driven power unit adapted lto operate through said shaft dooroperating liieuiis to o ien said door.

5. This com ination with en elevator shaft door having self lockingmanuel opening moans, of au elevator car, wer means rari-lcd by `saidcnr and operaba at the will of the operator directlyA to unlock and toopen said door.

)in elevator system comprising an elevator lshaft door, inanuul opelatinmeans for scid door including a pair o pivotal links l1 and 12, u handoperating lever 17 for vufl links a normally retracted contactineiiilici- :i5 and power meansoperable at the will of the operator tocause said contact in coni-A ,l l or inove nient to .finding andunloading relation withl lll! iso

iin

member to en age and move said link 12 to operate said oor.

7. In an elevator system in combination, a car, a door, manuallyoperable toggle means for opening said door and for locking said door inclosed position, spring means for closing said door and locking saidtoggle, and motor driven means adapted to act upon said toggle means tooperate said door. y

8. An elevator system comprising an ele'- vator car; closure means forsaid car arranged for manual operation to and from its o en position; ashaft door; self-locking han 'operab1e means for opening said' door; andelectricall operated power means operable at the Wi 1 of the operator ofthe car to eifect the unlocking of said liandoperable means and thesubsequent operation of said shaft door and acting therethrough to opensaid closure means.

9. An elevator system comprising, in cornbination, an elevator shaftdoor, an elevator car, a door for said car, manually operable means foro ning one of said doors, spring means for cosing said door, electricmotor operated means normally disconnected from said manually operablemeans arranged to ltric motor` operated means or be operated at the willof the operator toy act upon saidV manually operable means -to o n saiddoor and means automatically to e ect the interlocking o' said doors,Whereb both may be opened simultaneously by sai elecsaid manual meansand closed by said spring means.V

10. An elevator system comprising, in combination a car, a door,manually operable opening means for said door, spring means for closingsaid door, power means carried by said car and means operable at will tooperatively connect said power means with said manually operable meansto operate the same by power.

11. In combination, a door, manually operable toggle means for openingsaid door and for locking said door in closed position, electricallyoperated means normally disconneotedfromsa-id toggle means'adapted to bemoved operatively to engage said toggle to unlock and open said door,and sprin means to actuate said toggle to close sai door.

In testimony whereof, I have signed my name to this specification.

JOSEPH R. JACKSON, Je

member to en age and move said link 12 to operate said oor.

7. In an elevator system in combination, a car, a door, manuallyoperable toggle means for opening said door and for locking said door inclosed position, spring means for closing said door and locking saidtoggle, and motor driven means adapted to act upon said toggle means tooperate said door.

8. An elevator system comprising an elevator car; closure means for saidcar arranged for manual operation to and from its o en position; a shaftdoor; self-locking han #operable means for opening said door; andelectrically operated power means operable at the will of the operatorof the ear to effect the unlocking of said hand-operable means and thesubsequent operation of said shaft door and acting therethrough to opensaid closure means.

9. All elevator System comprising, in combination, an elevator shaftdoor, an elevator car, a door for said car, manually operable means foro ning one of said doors, spring means for c osing said door, electricmotor operated means normally disconnected from said manually operablemeans arranged to 4tric motor operated means be operated at the will ofthe operator to act upon said manually operable means .to o en 3o saiddoor and means automatically to e ect the interlocking of said doors,whereby both may be opened simultaneously by said elecor said manualmeans andV closed by said spring means.

l0. An elevator' system comprising, in combination a car, a door,manually operable opening means for said door, spring means for closingsaid door, power means carried by said car and means operable at 40 willlo operatively connect said power means with said manually operablemeans to operate the same by power.

l1. In combination, a door, manually operable toggle means for openingsaid door and for locking said door in closed position, electricallyoperated means normally disconnected from said toggle means adapted tobe moved operatively to engage said toggle to unlock and open said door,and spring means to actuate said toggle to close said door.

Ia testimony whereof, I have signed my name to this specification.

JOSEPH R. JACKSON, JR.

CERTIFICATE OF CORRECTION.

Patent No. 1,632, 376.

Granted June 14, 1927, to

JOSEPH R. JACKSON, JR.

lt is hereby certified that error appears in the above numbered patentrequiring correction as follows: ln the heading to the printedspecification. line 3, name of assignee, for "A. B. Lee ElevatorCompany,

lne.", read "A. B. See

Elevator Company, lnc."; page 4, line l1, for the word "continues", read"continue",landiline 32, for the word "guide"1 read "guides";

and that the said Letters Patent should be read with these correctionstherein that the same may conform to the record of the case in thePatent Office.

Signed and sealed this 12th day of July, A. D. 1927.

Seal.

M. J. Moore, Acting Commissioner of Patente.

CERTIFICATE OF CORRECTION.

Patent No. 1,632,376. Granted June 14, 1927, to

JOSEPH R. JACKSON, JR.

lt is hereby certified that error appears in the above numbered patentrequiring correction as follows: In the heading to the printedspecification. line 3, name of assignee, for "A. B. Lee ElevatorCompany, Inc. read "A. B. See Elevator Company, lnc."; page 4, line 11,for the word "continuesmread "con tinue", and line 32, for the word"guide" read "guides"; and that the said Letters Patent should be readwith these corrections therein that the samemny conform to the record ofthe case in the Patent Office.

Signed and sealed this 12th day of July. A. D. 1927.

M. J. Moore, Seal. Acting Commissioner of Patente.

